<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>第一个three.js文件_WebGL三维场景</title>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            /* 隐藏body窗口区域滚动条 */
        }
    </style>
    <!--引入three.js三维引擎-->
    <script src="http://www.yanhuangxueyuan.com/versions/threejsR92/build/three.js"></script>
    <script src="http://www.yanhuangxueyuan.com/threejs/examples/js/controls/OrbitControls.js"></script>
    <!-- <script src="./three.js"></script> -->
    <!-- <script src="http://www.yanhuangxueyuan.com/threejs/build/three.js"></script> -->
</head>

<body>
    <script>
        /**
         * 创建场景对象Scene
         */
        var scene = new THREE.Scene();
        /**
         * 创建网格模型
         */
        // var geometry = new THREE.SphereGeometry(60, 40, 40); //创建一个球体几何对象
        var geometry = new THREE.BoxGeometry(100, 100, 100); //创建一个立方体几何对象Geometry(长、宽、高)
        var material = new THREE.MeshLambertMaterial({
            color: 0x0000ff
        }); //材质对象Material
        var mesh = new THREE.Mesh(geometry, material); //网格模型对象Mesh
        scene.add(mesh); //网格模型添加到场景中

        // 立方体网格模型
        var geometry1 = new THREE.BoxGeometry(100, 100, 100);
        var material1 = new THREE.MeshLambertMaterial({
            color: 0x0000ff
        }); //材质对象Material
        var mesh1 = new THREE.Mesh(geometry1, material1); //网格模型对象Mesh
        scene.add(mesh1); //网格模型添加到场景中

        // 球体网格模型
        var geometry2 = new THREE.SphereGeometry(60, 40, 40);
        var material2 = new THREE.MeshLambertMaterial({
            color: 0xff00ff
        });
        var mesh2 = new THREE.Mesh(geometry2, material2); //网格模型对象Mesh
        mesh2.translateY(120); //球体网格模型沿Y轴正方向平移120
        scene.add(mesh2);

        // 圆柱网格模型
        var geometry3 = new THREE.CylinderGeometry(50, 50, 100, 25);
        var material3 = new THREE.MeshLambertMaterial({
            color: 0xffff00
        });
        var mesh3 = new THREE.Mesh(geometry3, material3); //网格模型对象Mesh
        // mesh3.translateX(120); //球体网格模型沿Y轴正方向平移120
        mesh3.position.set(120, 0, 0);//设置mesh3模型对象的xyz坐标为120,0,0
        scene.add(mesh3); //
        /**
         * 光源设置
         */
        //点光源
        var point = new THREE.PointLight(0xffffff); // 参数为光照强度
        point.position.set(400, 200, 300); //点光源位置
        scene.add(point); //点光源添加到场景中
        //环境光
        var ambient = new THREE.AmbientLight(0x444444);
        scene.add(ambient);
        // console.log(scene)
        // console.log(scene.children)
        /**
         * 相机设置
         */
        var width = window.innerWidth; //窗口宽度
        var height = window.innerHeight; //窗口高度
        var k = width / height; //窗口宽高比
        var s = 200; //三维场景显示范围控制系数，系数越大，显示的范围越大
        //创建相机对象
        var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
        camera.position.set(200, 300, 200); //设置相机位置
        camera.lookAt(scene.position); //设置相机方向(指向的场景对象)
        /**
         * 创建渲染器对象
         */
        var renderer = new THREE.WebGLRenderer();
        renderer.setSize(width, height);//设置渲染区域尺寸
        renderer.setClearColor(0xb9d3ff, 1); //设置背景颜色
        document.body.appendChild(renderer.domElement); //body元素中插入canvas对象
        // 渲染函数
        function render() {
            renderer.render(scene, camera);//执行渲染操作
        }
        render();
        var controls = new THREE.OrbitControls(camera, renderer.domElement);//创建控件对象
        controls.addEventListener('change', render);//监听鼠标、键盘事件
    </script>
</body>

</html>